Pain in the left mons pubis can come from the skin or hair follicles, a swollen lymph node, muscle strain, hernia, urinary infection, or pain referred from the ovary or pelvis. It cannot be diagnosed safely from location alone.

Seek emergency care now if she has any of these:

Pregnancy should be ruled out promptly in any reproductive-age woman with pelvic or groin pain, because ectopic pregnancy can become life-threatening. The ACOG ectopic pregnancy guidance advises urgent emergency assessment for severe pain, shoulder pain, weakness, dizziness, or fainting.

Arrange a same-day medical or gynecology review if pain persists, there is a lump/swelling/redness, urinary burning, unusual vaginal discharge, fever, or pain during sex. A clinician may need a pregnancy test, urine test, abdominal/pelvic examination, and possibly pelvic ultrasound.

Until assessed: avoid pressing or shaving the area, avoid heavy lifting, and use a warm compress only if it seems superficial skin tenderness without a growing lump or fever.

Is the pain on the skin with a visible lump/rash, or is it deeper in the lower abdomen/pelvis? Is there any chance of pregnancy or vaginal bleeding?